Crash,
I can't argue with most of your assertions regarding performance, but I'd bet that the number of 180's in Alaska is at least quadruple the number of 182's, so your assertion that they are the main grocery getter in Alaska I think may be a little suspect. There are not that many 182s in the interior, at least.
Nonetheless, they are a great airplane. The later models without the stabilizer trim system are really hard to land without banging the nose down if you are at all light. The nose gear in the 182 is attached directly to the firewall, unlike the 206 setup. So, if you bang that nose gear a little too hard, you are about to take that airplane completely apart. I have seen that in at least a few 182's.
The early 182s have the same trim system as a 180, and are much easier to keep the nosewheel off the rough stuff.
There is no IO-550 rated for 330 hp. Great Plains has an IO-550 rated at 300 hp in the 182, only approved in the late 182. Big engine, big fuel flows.
There are essentially two ways to go with floats on the 182: Aerocets, with Seaplanes West kit, or Wipline's kit, with their floats. The primary difference, other than the floats, is that the Wip floats forward attach points are new large structural members attached to the firewall, which both provide more stiffness to the floats, AND strengthen the firewall.
On the other hand, the Seaplanes West kit with the Aerocets installs the forward fittings to the nose gear attach point. That directs all the loads into the weakest point in the structure, and it forms a triangular forward attachment--not nearly as strong.
Take a look at a set of Aerocets on a 206 while landing in some wave action-the fronts of the floats move around a good bit, because they are attached to the fuselage at one point in front. I believe Seaplanes West uses similar attachments. At least the Aerocets Ive seen on 182s are like this.
I like the way Wip attaches the front fittings to the airframe. It is strong, and allows higher gross weights in the 206. Not sure about the 182 and gross weight.
MTV